oh lawdee! Where were you at during all of my childhood that I enjoyed both of these consoles? It's all nostalgic, I don't consider one better than the other but if you're talking about the console themselves, SNES was after NES so obviously better graphics and what not. Please tell me you're joking though and you're aware of both of these? As far as emulators for them working on R4, nesDS works, and as of right now there's now SNES emu that works.